Draw this situation.
Include the weight of the sled, the normal force and the force on
the sled due to the girl's pull.
the normal force of the ice on the sled. Notice it is not equal
to the weight of the sled and the boy. Explain this in your own
the net force on the sled in the horizontal direction. Calculate
the corresponding initial acceleration of the sled.
the girl can maintain this acceleration for 1.5 seconds, how fast
will the sled be moving then?